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Finding the Fourth Proportional to 279,509.72, 385,710.54 and 152,184.92

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Solution

The fourth proportional to 279,509.72, 385,710.54 and 152,184.92 is: 210,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,509.72 : 385,710.54 = 152,184.92 : x
  2. Step 2: Convert to fraction form
    279,509.72/385,710.54 = 152,184.92/x
  3. Step 3: Cross multiply
    279,509.72x = 385,710.54 × 152,184.92
  4. Step 4: Simplify right side
    279,509.72x = 58,699,327,673.06
  5. Step 5: Solve for x
    x = 58,699,327,673.06/279,509.72
  6. Step 6: Final answer
    x = 210,008.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.